A. PIR Infrared Sensor Our ultrasonic device for cats is equipped with a PIR sensor, which is an infrared sensor that can continuously emit signals. When it detects a moving animal entering the detection range, it may automatically emit sound waves to drive the animal away. B. Solar Design and IP44 Waterproof Rating This ultrasonic cat repellent can work in various weather conditions, and its waterproof rating reaches IPX44. This waterproof design allows it to operate normally in various weather conditions such as rain, snow, ice, and wind (it is not recommended to immerse it in water). C. Solar Charging There is a solar panel above the rodent repellent, which can use solar energy to charge under sunlight. It has relatively high charging efficiency and can maintain a relatively long standby time throughout the day. There is no need to replace the battery, which is energy - saving and environmentally friendly. It can work effectively throughout the year in most weather conditions. D. Easy Installation This ultrasonic animal repellent is equipped with a vertical rod that can be directly connected to the ground. It has a portable and compact design and can be installed in your home, garden, yard, or other places. It can help keep away naughty stray dogs, stray cats, and other small animals, protecting your property and garden. E. Environmentally Friendly and Versatile This outdoor cat repellent does not contain any chemicals or pesticides and is safe for humans and pets. It is suitable for driving away cats, dogs, rodents, and other unwanted animals. The ultrasonic animal repellent is applicable to places such as gardens, yards, lawns, farms, and kindergartens.